Note 13 - Segment Information (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Three Months Ended March 31,
	2023			2022
Revenue:
Electronic Test	$	10,371		$	8,778
Environmental Technologies		8,042			6,993
Process Technologies		13,506			8,310
Total revenue	$	31,919		$	24,081
Income from divisional operations:
Electronic Test	$	2,578		$	1,887
Environmental Technologies		1,013			802
Process Technologies		2,676			730
Total income from divisional operations		6,267			3,419
Corporate expenses		(2,205	)		(1,835	)
Acquired intangible amortization		(544	)		(782	)
Interest expense		(182	)		(137	)
Other income (expense)		58			(10	)
Earnings before income tax expense	$	3,394		$	655

Revenue from External Customers by Geographic Areas [Table Text Block]

	Three Months Ended March 31,
	2023		2022
Revenue:
U.S.	$	11,090	$	9,234
Foreign		20,829		14,847
	$	31,919	$	24,081

Long-Lived Assets by Geographic Areas [Table Text Block]

	March 31,		December 31,
	2023		2022
Property and equipment:
U.S.	$	2,537	$	2,658
Foreign		670		474
	$	3,207	$	3,132

Asset [Member]

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	March 31,		December 31,
	2023		2022
Identifiable assets:
Electronic Test	$	31,303	$	31,143
Environmental Technologies		18,362		18,040
Process Technologies		57,672		56,866
Corporate		6,179		4,017
	$	113,516	$	110,066